CN100464513C

CN100464513C - Electronic documant coordination downloading system and method

Info

Publication number: CN100464513C
Application number: CNB2006101556922A
Authority: CN
Inventors: 陈卫文; 陈志斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-30
Filing date: 2006-12-30
Publication date: 2009-02-25
Anticipated expiration: 2026-12-30
Also published as: CN101022346A

Abstract

A method for downloading electronic file coordinately includes submitting file download task to file download device by user terminal, applying file download by file download device actually and then feeding result back to user. The download system used for realizing said method is also disclosed.

Description

A kind of electronic documant coordination downloading system and method

Technical field

The present invention relates to internet document download technology field, especially a kind of electronic documant coordination downloading system and method, utilize embedded computer technology, realize that multi-functional, low energy consumption, unattended internet document download, download or be loaded with down at a slow speed the application of uniqueness especially for big file, the multithreading download, breakpoint re-transmission, unattended operation, distributed control, P2P file transfer, the Streaming Media that wherein relate to file are downloaded and embedded Linux technology.

Background technology

1. present file transfer mode mainly comprises:

1) Email

2) FTP (TFTP) file transfer protocol (FTP)

3) HTTP file transfer

4) P2P file transfer

5) RTSP/MMS Streaming Media transmission

2. all there is different defectives in above-mentioned file transfer mode:

1) Email

The file size that can transmit is restricted, in general each file size limitation 5MB that can transmit;

Whether can successfully transmit the setting that relies on the service provider, file is big more, just more possible bust this;

The file that is transmitted need just can transmit by the base64 coding, and the direct result of coding is exactly that the data that cause transmitting roll up;

2) FTP (TFTP) file transfer protocol (FTP)

Ftp server generally has bandwidth constraints on the public internet network, and speed is slower;

3) HTTP file transfer

Web server generally has bandwidth constraints on the public internet network, and speed is slower;

Uploading in the downloading process of HTTP file need operate by the Web webpage, and the security breaches of browser causes the Web webpage to have a lot of security breaches, thereby brings bigger safety problem, the infringement computer system;

4) P2P file transfer

Frequently storage devices such as hard disk are read and write for a long time, directly influenced hard disk life-span;

Various P2P softwares are mutually incompatible, realize all need installing different P2P software at different P2P;

The P2P software quality is uneven, and each has separately code back door or profit model, and these patterns just may be brought the infringement to user machine system, such as pop-up advertisement or malice seed, blanking bar rogue software or virus, hide system's wooden horse etc.;

5) RTSP/MMS Streaming Media transmission

The files in stream media of RTSP/MMS must be downloaded while playing, download and depend on network condition at that time whether continuously fully and download content, under present network environment, be difficult to reach continuous broadcast, desultory broadcast directly has influence on the interest of user to the RTSP/MMS program;

Because the problem of the network bandwidth, the user appreciates the RTSP/MMS program need expend the time more much longer than program itself;

RTSP/MMS tends to insert advertisement or eject webpage in media protocol in playing process, and this just has very adverse influence to user's system safety, if the webpage that ejects is to point to certain malicious web pages, consequence just may be very serious;

3. in the existing realization of above transmission means, all be that computer software is realized, must rely on employed computer system, therefore have some common defectives:

1) noise height

Noise will cause direct injury to the health status of human body when surpassing 80 decibels.Even if sound is not above 80 decibels, a people works long hours under the environment of noise, accumulate over a long period, can produce harmful effect to user's auditory nerve, cerebral nervous system, show as the mood agitation, degradation health problem under in a disturbed state of mind, dizzy, dim eyesight, tinnitus, decrease of memory, the logical thinking ability.In international standard, the criteria for noise of computer is 60 decibels, and the noise of the cpu fan of the current market mainstream is just above 50 decibels.And be not only that cpu fan produces noise in the present computer system, the noise source in the computer system comprises:

Power noise

The cpu fan noise

The video card fan noise

Noise of optical drive

The hard disk noise

2) energy consumption height

In the computer system of main flow, main frame power all about 300 watts, form and comprise by the power of main frame (not comprising display) at present:

Table one. the power consumption of main flow computer is formed

3) electromagnetic radiation height

According to international MPRII radiation proof security regulations, at the exporusre of the interior Bi Xu ≦ 25V/m of 50cm distance, and in fact the amount of radiation of computer is:

Keyboard 1000V/m

Mouse 450V/m

Screen 218V/m

Main frame 170V/m

Notebook computer 2500V/m

4) there is potential safety hazard

Potential safety hazard comprises two aspects:

(1). software

Free software is often all leaky, back door or plug-in unit, and is under attack easily;

Software design is unreasonable to cause hardware to reduce useful life, and such as the frequent reading writing harddisk of BT software, existing at present evidence proof BT software is to the damage of hard disk;

(2). hardware

Computer has more mechanical part, such as, system fan, cpu fan, video card fan, power supply fan, CD-ROM drive, hard disk etc. are easy to damage in the continuous running process, and operation is broken down especially easily for a long time;

Because the power of computer increases, the caloric value of system is bigger, and the stability of electronic product is had bigger influence, gently then system crash, heavy then hardware permanent damage;

5) use inconvenience

File transfer protocol (FTP) is numerous, needs to install a plurality of download softwares

Before finishing, the file download must make computer system be in running status always

Can not pass through intelligent terminals such as palmtop PC, smart mobile phone and carry out download function

6) shortened useful life of computer hardware equipment virtually

Long-time transfer files causes the computer hardware long time continuous working, and reduce the service time that directly causes calculating.

The technical issues that need to address of the present invention:

1. the embedded hardware system of low-cost low energy consumption and stable performance

Solve following problem and use threshold to reduce:

(1). meet the system of the required operational capability of file download function

(2). the embodiment of low-cost low energy consumption

(3). system stability work

2. unified PC software operation flow process and user's using method easily

Basic demand;

(1). operating process and user's using method that file is downloaded meet the existing use habit of user

(2). method of operation is simple, convenient

The content that specifically needs realization:

(1). automatic analysis/intercepting and capturing user's downloading request

(2). explain multiple file download protocol automatically;

(3). provide identical human-computer interaction interface to different file download protocols;

3. embedded software developing

(1). realize multiple downloading mode, comprise FTP, HTTP, BT, ED2K, RTSP, mms etc.;

(2). provide the Windows file network to share

(3). the DDNS client is provided

(4). for storage device provides fault-tolerant ability

4. embedded system and user terminal module cooperative agreement

(1). the network of embedded system automatically/the human configuration method

(2). user terminal is found the method for file download equipment

(3). the method for user terminal control embedded system and the feedback mechanism of embedded system

5. avoid virus infections and network attack

(1). reduce port to network opening

(2). select and the present different command system of the x86 of main flow system

(3). select and the present different embedded system of mainstream operation system

(4). avoid making an explanation, do not carry out the code of downloading in the content downloading content;

Summary of the invention

The objective of the invention is to solve the defective of above-mentioned prior art, and provide a kind of electronic documant coordination downloading system and method, present a paper downloading task to the file download equipment from user terminal, carry out the file download and the result is fed back to the user by the file download equipment is actual, thereby avoid the system of using a computer to carry out all drawbacks that file is downloaded, realize the low-cost solution of file download equipment simultaneously.

Technical scheme of the present invention specifically is achieved in that

This electronic documant coordination downloading system of the present invention mainly comprises:

The user terminal module: be used to intercept the network address of file in download, add downloading task, the management downloading task is checked the state of downloading task, and the state of viewing files download equipment is provided with the parameter of file download equipment;

File download equipment: be used to carry out the task that e-file is downloaded;

Router: be used to be communicated with different networks, make user terminal by access to netwoks file download equipment;

External memory: be used to store the file of downloading from the Internet;

The file download equipment is connected with external memory by USB interface, and the file download equipment links to each other with router by Ethernet, and router is connected with user terminal by network.

This electronic documant coordination method for down loading of the present invention mainly may further comprise the steps:

(1). the file download equipment is connected with external memory by USB interface, and the file download equipment links to each other with router by Ethernet, the startup file download equipment;

(2). the locating file download equipment, carry out network configuration to the file download equipment;

(3). according to configuration, the file download equipment is submitted IP address and domain name to the DDNS server;

(4). at user terminal module interfaces input username and password, the user terminal module is according to the IP address of file download equipment or according to the domain name of file download equipment to the DDNS server registration, realize exchanges data with the file download terminal in the mode that sends request by network, obtain the authority of access file download terminal;

(5). the router that configuration is connected, guarantee unhinderedly access internet of file download equipment;

(6). in user terminal module input file downloading task, the position and the filename that promptly need downloaded files address and preservation, the user terminal module sends to the file download equipment with the file downloading task, the demand file download equipment assists to download the file of appointment, and the user controls this downloading task as required;

(7). the file download equipment is accepted the request of user terminal module, according to the position and the filename of file address in the file downloading task and preservation, by router from Internet assigned address file in download to the external memory that is connected with the file download equipment;

(8). the user visits the file of having downloaded by procotol in the file download equipment, or external memory is moved on to the file that visit has been downloaded on the miscellaneous equipment.

The effect that the present invention is useful is:

The core of native system is an ARM chip, and memory is FLASH, and operating system is uLinux;

1. power and energy saving:

The power of a home PC more than 300W, reference table one. the power consumption of main flow computer is formed; The power consumption of this equipment itself is not higher than 5W, is lower than 20W even adopt the hard disk of IDE to make the peripheral hardware total power consumption, adopts the notebook hard disk as peripheral hardware, is no more than 15W; The owning amount of 04 year Chinese PC has promptly reached 5,300 ten thousand, uses this equipment to replace computer to carry out download work, and it is considerable to save electric power; To China so one populous, the country that energy occupancy volume is relatively low comes quite meaningful per capita;

2. network security:

The security breaches of home computer derive from several aspects.

1) safety of operating system

Family expenses desktop system complex structure, security breaches are many and under attack easily; Operating system acquiescence is opened a lot of services, and known to many domestic consumers have no this;

2) safety of application software;

MSN MSN, QQ, the use of Skype etc. has become the part of people's work and life, and instant messaging in 2006 is attacked and is increased by 500%, becomes the assault new lover;

3) web browser

Most computer users uses the puzzlement of network to derive from the inexhaustible webpage that contains virus, wooden horse, malicious script; This equipment adopts the embedded OS of compact conformation, and function is simple but performance is powerful, to the network attack immunity at the desktop system leak; Except the necessary port of minority, other services and port are closed fully;

The operating system storage area of this equipment is a reading mode, and any virus and wooden horse do not have the ground of stopping over;

3. data isolation

Use desktop computer to carry out network download, need make computer in running order for a long time; The P2P downloading mode of current popular, what needs were constant and frequent carries out read-write operation to hard disk, and this makes the life-span of hard disk shorten dramatically; Corresponding with it is based on the HD vendor who steps holder guarantee time to be shortened to 1 year by 3 years.

A hard disk corruptions means that user data is without redemption to lose;

The sweet memories that perhaps, you and household, friend are arranged here;

The achievement that perhaps, your some months work is arranged here

The data that perhaps, the client that you will inquire for tomorrow is arranged here

......

The loss of a hard disk can be weighed with the price of a hard disk, but the data in hard disk but are difficult to estimate;

This equipment uses independently hard disk to download, and the user can use the remaining hard disk of upgrading to make memory; The physical isolation of hard disk has been avoided because the infringement that the computer whole system is caused is downloaded in multitask;

4. environmental protection

Environmental protection is divided into two parts: noise pollution and electromagnetic pollution;

Along with the development of hardware, the continuous lifting of CPU frequency, Overall Power Consumption constantly increases, and a cabinet the inside, has following fan operating:

Cpu fan, mainboard fan, power supply fan, video card fan, case fan;

These fans use certain hour, and lubricating oil can consume gradually, and bearing can wear and tear; Make noise problem outstanding day by day;

In the time of in the dead of night, be that network is relatively more idle, when network speed compares faster, and at this time move the sleep quality that computer can influence the user.

This equipment does not have any mechanical action parts, can not produce noise;

Along with the dominant frequency and the power consumption of computer CPU and video card constantly promotes, the electromagnetic radiation of computer is also more and more stronger, and is very important to the influence of human body;

This equipment is away from people's body running, and power consumption is little, a little less than the electromagnetic radiation extremely.

5. download in the strange land

In the current downloading mode, the user is file in download on computers, obtains the download result then to the computer of downloading;

In the downloading mode of this equipment, the user can be in different places waits by mobile phone, PDA, PC, notebook computer and controls this device downloads file, and the user needn't be near equipment.

The strange land download function is supported in the DDNS service that provides whenever and wherever possible.

6. support various protocols, easy to use

On the network there be popular file transfer protocol (FTP) at present: HTTP, and FTP, EMAIL, P2P downloads, and Streaming Media is downloaded;

At different agreement, the user need install different software, and often these softwares can only be handled single agreement; Can only download the bt file such as bittorrent, eMule can only understand the agreement of ED2k, and a sudden peal of thunder can only be downloaded HTTP, FTP; Preserve files in stream media, also will adorn softwares such as audio-visual transport tape; Often need to install several download softwares on a computer; The user often can be to these several softwares familiar with understanding very.

The client software of this coordinative composition of equipments provides unified interface and mode of operation, and the user does not need additionally to install other download software again, can support multiple download protocol, finishes the downloading task of these agreements and uses simple.

7. many people share

This equipment allows a plurality of user access device, and adds downloading task to equipment;

8. safeguard simple

Keep booting computer to carry out downloading task for a long time, cause the fault of computer hardware and software easily; Maintenance after computer breaks down bothers very much: operating system needs refitting, and application software needs refitting, and expend energy on is many; If hardware goes wrong, then also need to change hardware; And multitask is downloaded, and is very big to the life-span influence of computer, especially for the hard disk of memory device; In case hard disk corruptions is huge to user's influence;

This equipment uses simple, can not cause damage to software and hardware because of misoperation; Upgrade function is provided, and the user can easily upgrade to equipment and software; Even the device hardware accidental damage can not influence the normal use of user computer yet;

9. cheap

Hardware solution cheaply, and operation and safeguard that the expense of this equipment can ignore.

Description of drawings

Fig. 1 is a file download equipment hardware block schematic diagram of the present invention;

Fig. 2 is the square frame connection diagram that meets a system of the present invention;

Fig. 3 is a software module structure schematic diagram of the present invention;

Fig. 4 is a circuit theory schematic diagram of the present invention;

Fig. 5 is the principle schematic of power unit of the present invention;

Fig. 6 is the principle schematic of FLASH part of the present invention;

Fig. 7 is the principle schematic of SDRAM part of the present invention;

Fig. 8 is the principle schematic of usb segment of the present invention;

Fig. 9 is the principle schematic of Ethernet interface part of the present invention;

Figure 10 is the configuration flow schematic diagram of file download equipment of the present invention network when starting;

Figure 11 is the message schematic diagram between user terminal of the present invention and the file download equipment;

Figure 12 is the control flow schematic diagram of file transmitting function of the present invention;

Embodiment

The invention will be described further below in conjunction with drawings and Examples:

This electronic documant coordination downloading system of the present invention, as shown in Figure 2, this system mainly comprises:

The user runs on such as computer systems such as PC, notebook computers, perhaps such as the software control file download equipment on the intelligent terminals such as smart mobile phone, palmtop PC, these departments of computer science intelligent terminal of unifying abbreviates user terminal in this article as.The user terminal module is used to intercept the network address of file in download, adds downloading task, and the management downloading task is checked the state of downloading task, and the state of viewing files download equipment is provided with the parameter of file download equipment.

The file download equipment is used to carry out the e-file downloading task;

Router is used to be communicated with different networks, makes user terminal by access to netwoks file download equipment;

External memory is used to store the file of downloading from the Internet, and external memory can be the card reader (CF card, mmc card, SD card etc.) of portable hard drive, USB flash disk, all kinds of USB interface;

Wherein, the file download equipment is connected with external memory by USB interface, and the file download equipment links to each other with router by Ethernet, and router is connected with user terminal by network, and the user uses user terminal by access to netwoks file download equipment.In actual applications, the user uses the router local area network (LAN) that founds a family; Computer links to each other by router with equipment, and the USB hard disk is as the storage peripheral hardware; One or more users can pass through user terminal module accesses equipment, interpolation task in equipment, and task managed; The user also can be by the data on the Microsoft file sharing protocol visit USB hard disk.

Described file download equipment mainly comprises the chip by ARM, Dram, Flash memory, network interface, compositions such as USB interface, structural representation as shown in Figure 1:

CPU is used for data processing, with Winbond W90N740 chip, in be with an ARM7TDI, two USB1.1 interfaces, two Ethernet interfaces, wholely realize that cost is lower and stable performance is enough;

Dynamic memor, the internal memory that uses 32 Mbytes is to guarantee the smooth and easy operation of software systems energy;

The Flash memory, the flash memory of 4 Mbytes guarantees the software binary code and the configuration information of storage system;

Usb circuit is used for being connected with external memory;

Ethernet interface circuit is used for being connected with router;

Power module is used for powering to file download equipment each several part.

Peripheral auxiliary circuits mainly comprises network interface indicator light, USB mouth indicator light, power supply indicator and the serial ports and the jtag interface circuit that use for ease of maintainability test.

The file download equipment provides USB HOST interface, and the user can insert the USB flash disk, and equipment such as USB portable hard drive are as memory;

The power supply of file download equipment is provided by DC power supply;

The file download equipment provides following indicator light to show current state:

Power supply indicator: indicate whether power connection;

Network indicator light: indicate whether at the transceiver network packet

USB indicator light: indicate whether in the visit USB device.

A software section part operates on the user terminal, and a part operates on the file download equipment.

The software of user terminal comprises following module:

Network address sniffer module, assisting users obtains the information of file in download;

The software interface module; Be used for man-machine interaction;

Device talk module: be used for the communication between user terminal and the file download equipment.

The software of the Flash memory storage of described file download equipment as shown in Figure 3, mainly comprises:

Subscriber authentication module: be used for the power whether identifying user identity has the access file download equipment;

The file download module: support BT, ED2K, HTTP, FTP, MMS, multiple download such as RTSP and multi-media protocol are carried out the downloading task of these agreements;

DDNS module: DDNS is the DDNS server system, and the DDNS module is by the current IP at internet of the DDNS server registers file download equipment on network, thereby the user can be by the domain name access file download equipment of internet;

Device talk module: be used for the communication between user terminal and the file download equipment;

Main control module: Monitoring Files download equipment state, accept and the distribution downloading task;

Operating system: μ cLinux operating system and driver.

(6). from user terminal module input file downloading task, promptly need the position and the filename of downloaded files address and preservation, the user terminal module sends to the file download equipment with the file downloading task, and the user controls this downloading task as required;

(7). the file download equipment is selected corresponding download agreement (FTP, HTTP etc. see Fig. 3) according to the file address in the file downloading task, then the external memory that extremely is connected with the file download equipment from Internet assigned address file in download by router;

Performing step of the present invention:

1. file download equipment hardware cell schematic diagram, as shown in Figure 4, concrete circuit diagram such as Fig. 5, Fig. 6, Fig. 7, Fig. 8, shown in Figure 9:

(1). the nReset of all circuit all is connected to the nReset of system supplymentary circuit, finishes the reset function of whole system;

(2). ethernet module is connected to the MACO port on the CPU;

(3) .USB uses the USB mouth of band in the Winbond W90N740, and nWDOG, the nIRQ1 of USB interface chip AIC1525 meet nWDOG, the nIRQ1 of W90N740 respectively, and D1+ links the USB_DP on the W90N740 on the USB interface; D1-links the USB_DN on the W90N740 on the USB interface.The USB interface chip checks whether the USB device access is arranged and testing result is notified to CPU (W90N740) by the mode that nIRQ1 interrupts by the mode that detects electric current.

2. power principle figure, as shown in Figure 5,

(1). the major function of this part provides the power supply of entire equipment (5 volts, 3.3 volts, 1.8 volts etc.)

(2) .CON3 connects external AC/DC adapter;

(3) the .VDD out-put supply is given other modules of hardware, comprises the power supply of CPU, the power supply of USB external equipment, the power supply of memory chip and the power supply of network interface card;

3.SDRAM/FLASH circuit diagram, as shown in Figure 5 and Figure 6,

(1) .4MB flash memory (FLASH) (address distributes from 0x00000000 to 0x0x00400000)

(2) .32MB Dram (every 8MB, totally 4, the address distributes from 0x00800000 to 0x02000000)

(3). above chip is connected on the address wire and data wire of CPU, and is arranged to different addresses respectively.Concrete method of attachment is with reference to figure 1, Fig. 5 and Fig. 6.

4. file download equipment interface principle figure: as Fig. 8 and shown in Figure 9.

(1) .USB interface principle figure

USB_DP:USB0D+, the data wire of USB I/O

USB_DN:USB0D-, the data wire of USB I/O

The indication of nIRQ1:USB0 overcurrent, USB interface indicates CPU to have USB device to insert or extract with this pin in the mode of interrupting;

The control of nWDOG:USB0 ON/OFF, CPU is by the power supply output on this pin control USB interface;

(2). the Ethernet interface schematic diagram

RXDW_DV: it is effective that Ethernet receives data

RXDW_CLK: Ethernet receive clock

RXDWD[0:3]: Ethernet receives data

TXDW_EN: Ethernet sends and enables

TXDW_CLK: Ethernet receive clock

TXDWD[0:3]; Ethernet receives data

COL_W: ethernet collision indication

4. in the W90N740 system, transplant embedded μ CLinux operating system and write the indicator light driver;

5. the startup environment of configuration μ CLinux operating system, the particularly configuration flow of network during starting device: as shown in figure 10,

(1). whether checkout facility is configured to obtain automatically the IP address during network startup;

(2). if obtain the network that the IP address then starts the dhcp client configuration device automatically;

(3). if not obtaining the IP address automatically, the configuration information in the fetch equipment then;

(4). and start network,, then need carry out the I address of next step configuration file download equipment if the network settings of this moment can't allow user terminal module accesses presents download equipment according to configuration information;

(5). from user terminal input file download equipment IP address, in user terminal modules configured function, the file download equipment is carried out network configuration;

(6). from the identifying code and the password of the DDNS of user terminal input file download equipment, DDNS server address, DDNS server, in user terminal modules configured function, the file download equipment is carried out the domain name configuration;

6. write the agreement realization of electronic documant coordination download and the co-operation of user terminal module, co-operation realizes by the mode by network transmission request between user terminal module and file download equipment, message flow diagram such as Figure 11, message is described as follows;

(1). search equipment

I. in the terminal software start-up course, from the file download equipment of broadcasting on the subnet at trend place on this message Network Search;

If ii. do not find the file download equipment, it is also out of service then to point out subscriber equipment not exist;

If iii. find the file download equipment, continue operation;

(2). search the response of equipment

I. after the file download equipment starts,, just send this message and come informing user terminal with response " searching equipment " in case receive the message of " searching equipment ";

Ii. the parameter in this message comprises the current network configuration mode (static IP/dynamic IP) of file download equipment, IP address, subnet mask, default gateway, domain name server address, device name etc.;

(3). configuration device

I. after client terminal finds equipment by " searching equipment " message, can send this message the equipment that is found is configured;

Ii. this message can be configured to down content: IP obtain manner, IP address, subnet mask, default gateway, name server, device name, login password etc.;

(4). connection device

I. user terminal is by sending this message to sign in to the file download equipment to the file download equipment;

Ii. encrypt parameter-embedded comprising such as later user cipher, the ID of user terminal etc.;

(5). task requests

I. user terminal sends this message request file download equipment to the file download equipment after obtaining the user to need downloaded files increases a new downloading task to assist to download specified file;

Ii. the fileinfo of required appointment comprises: URL, agent address/act on behalf of account number, login name/password, download later deposit position;

(6). the query facility state

I. user terminal is in running, by sending the operating state that this message is obtained the file download equipment to the file download equipment;

Ii. the operating state that obtains the file download equipment is shown to the user later on;

(7). status report

I. the file download equipment receives that user terminal " query facility state " message sends " status report " message later on and provides user terminal needed state information;

Ii. the state information of file download equipment comprises the information/free space, network state (flank speed, Mean Speed, accumulative total file in download number or byte number) of the state (waiting in line, suspend, download, download completed percentage, priority) of each task in the formation of downloading task in the equipment and the formation, external storage device etc.;

(8). the modification task

I. if the user needs to cancel/suspend/and stop the download of certain file or revise priority, then send this message to the file download equipment;

Ii. need the information to the file download equipment of informing to comprise in the message: file ID, the required operation of carrying out (cancellation/time-out/termination/priority) if revise priority, also comprise the priority that file is new;

Iii. the file download equipment is received after this message and the processing, gives the last state of user terminal to inform that the modification task is later by sending " status report ".

7. write primary control program and realize the control of file download function, flow chart is illustrated in fig. 12 shown below:

(1). the initialization flash memory module, the file device of flash memory as equipment;

(2). the task queue that initialization waits for downloads, if uncompleted downloading task is arranged on the flash memory then these tasks is added in the task queue in order to downloading;

(3). 443 ports of opening 127.0.0.1 are with by the communication between each process in the system;

(4). the beginning message circulation is known and is received end and withdraw from message circulation;

(5). check the message whether receive from user terminal, if having then handle it;

(6). check the request whether receive from storage device, if having then handle it;

(7). check whether whether the file that waits for downloads and USB storage device and network interface card are arranged working properly,, then download accordingly according to the content start in the task queue if all satisfy condition;

(8). check whether the request that downloads is arranged,, then handle it if having;

(9). check the state that each downloads, and refresh the state recording of each program;

(10). refresh the numerical value of house dog (WatchDog), can restart the recovery operate as normal automatically in case the effect of house dog is system crash.

8. write the user terminal module and realize popular mode of operation.

(1). whether the operation of monitoring user clickthrough on Web browser, if link is file, then activates human-computer interaction interface prompting user and use the user terminal module to download;

(2). whether the variation of surveillance clipbook, if the content of clipbook is an effective internet document link, then activates human-computer interaction interface prompting user and use the user terminal module to download;

(3) if. the user selects to use the user terminal module to download, and just download message is sent to the file download equipment;

(4). regularly inquire about the states such as progress of file in download;

(5). double-click has been finished the downloaded files name and has been opened file;

(6). by the state of menu or the download of shortcut control documents;

(7). the user terminal module is supported Windows, WinCE, Symbian and (SuSE) Linux OS.

9. write the client software of DDNS, this running software realizes that by the DDNS server that provides DDNS is explained so that the file download equipment of the Internet is received in visit by PPPoE on the file download equipment;

(1). user terminal is provided with (name server, DDNS, user rs authentication sign indicating number and password) to the DDNS of file download equipment;

(2). the DDNS client software is registered to the DDNS server of appointment according to the user rs authentication sign indicating number/password and the DDNS that provide;

(3). after the DDNS client software starts, periodically refresh the IP address of this machine with the mode of UDP to the DDNS server.

10. router is set can hinder the accessing the Internet to guarantee the file download equipment:

Router can have dual mode to guarantee that the file download equipment can not hinder the accessing the Internet:

(1) .DMZ mode is set to the DMZ zone to the file download equipment, and the file download equipment is exposed on the Internet, and the Internet and file download equipment can unhinderedly be visited mutually;

(2). the port mapping mode, the port numbers that the file download equipment need use is shone upon, the Internet is transmitted to the file download equipment to the visit of designated ends slogan on the router.

In addition to the implementation, the present invention can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of requirement of the present invention.

Claims

1. electronic documant coordination downloading system, it is characterized in that: this system mainly comprises:

External memory: be used to store the file of downloading from the Internet;

The file download equipment is connected with external memory by USB interface, and the file download equipment links to each other with router by Ethernet, and router is connected with user terminal by network;

Described file download equipment mainly comprises:

CPU: be used for data processing;

Dynamic memor: be used for the operation of software systems;

Flash memory: the software binary code and the configuration information that are used for storage system;

Usb circuit: be used for being connected with external memory;

Ethernet interface circuit: be used for being connected with router;

Power module: be used for powering to file download equipment each several part;

Described user terminal module section mainly comprises:

Network address sniffer module: assisting users obtains the address of file in download;

Software interface module: be used for man-machine interaction;

The software of the Flash memory storage of described file download equipment mainly comprises:

The file download module: support BT, ED2K, HTTP, FTP, MMS, RTSP downloads and multi-media protocol for many kinds, carries out the downloading task of these agreements;

DDNS module: DDNS is the DDNS server system, and the DDNS module is by the internet-ip address and the domain name of the DDNS server registers file download equipment on network, and the user can be by the domain name access file download equipment of file download equipment;

Operating system: embedded OS and driver.

2. electronic documant coordination method for down loading, it is characterized in that: present a paper downloading task to the file download equipment from the user terminal module, by the file download equipment by router from Internet assigned address file in download to the external memory that is connected with the file download equipment, and the progress of downloading task and result fed back to the user terminal module, by user terminal module and the collaborative download of finishing e-file of file download equipment; Specifically may further comprise the steps:

(4). at user terminal module input username and password, the user terminal module is according to the IP address of file download equipment or according to the domain name of file download equipment to the DDNS server registration, realize exchanges data with the file download terminal in the mode that sends request by network, obtain the authority of access file download terminal;